如下左图所示，为方便残疾人上下台阶，一些公共场所设计了专用通道（斜面）．沿通道上台阶和直接上台阶比较，可以____（选填“省力”或“省功”），若将重700N的小车沿8m长的斜面推上1.2m的平台，沿斜面所用的推力为150N，用时40s在此过程中做的有用功为____J，推力的功率为____W，小车受到的摩擦力为多少____N，斜面的机械效率为____．

位于北京的名胜古迹是（　　）

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

      “Equal pay for equal work” is a phrase by the American women who feel they are ____ (fair) treated by society.They think it is not right for women to be paid less than men for the____ amount of work.Some people say men have ____  (many) duties than women.A married man has to earn money to support his family and make important ____ (decide)，so it is right for them to be paid more.Some are even against married women ____ (work) at all.When wives go out to work，they say，the home and children are given no attention ____ ．If women are encouraged by equal pay to take up jobs，they will be ____ (able) to do the things that they are best at doing：making a nice home and bringing ____ children.Women who disagree say that they want to escape from the limited place which society wishes them to fill and have ____ freedom to choose between a job and home life，____ a mixture of the two.In fact women have the right not only to equal pay but also to equal chances.

修改病句。

①他的意见基本上是完全正确的。

②王林穿着一件灰色上衣，一顶帽子。

读下图，回答下面小题。